Invention Grant
- Patent Title: Data communication method and mobile communication system
- Patent Title (中): 数据通信方式和移动通信系统
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Application No.: US12278357Application Date: 2006-09-26
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Publication No.: US07885235B2Publication Date: 2011-02-08
- Inventor: Mitsuru Mochizuki , Miho Maeda , Yasushi Iwane , Noriyuki Fukui , Tetsuya Mishuku , Michiaki Takano , Ryoichi Fujie , Shigenori Tani , Akira Okubo , Keisuke Ozaki
- Applicant: Mitsuru Mochizuki , Miho Maeda , Yasushi Iwane , Noriyuki Fukui , Tetsuya Mishuku , Michiaki Takano , Ryoichi Fujie , Shigenori Tani , Akira Okubo , Keisuke Ozaki
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClellad, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2006/319015 WO 20060926
- International Announcement: WO2008/038336 WO 20080403
- Main IPC: H04W4/00
- IPC: H04W4/00

Abstract:
Since OFDM (Orthogonal Frequency Division Multiplexing), which is a downlink access scheme used for an LTE (Long Term Evolution) communication system, is weak at interference, it is preferable that the number of base stations for transmitting the same E-MBMS (Evolved Multimedia Broadcast Multicast Service) data be not excessive.Thus, the mobile terminal performs: processing of obtaining measurement quality values by measuring reception quality of each base station; processing of deciding on whether the measurement quality value of a serving base station exceeds a certain receiving level; processing of adding measurement quality values of other base stations to the measurement quality value of the serving base station until the sum exceeds the certain receiving level; and processing of notifying the serving base station of the serving base station and other base stations as candidates for an active set for E-MBMS. This makes it possible to select as the active set for E-MBMS an appropriate number of base stations that make it compatible to maintain good reception quality and to prevent interference.
Public/Granted literature
- US20090175183A1 DATA COMMUNICATION METHOD AND MOBILE COMMUNICATION SYSTEM Public/Granted day:2009-07-09
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